LaserGRBL makes it easy. Glad it’s working for you.
You may want to set a Macro in Console that disables homing by setting $22=0. Then have a complementary one that enables with $22=1.
If you need some additional guide on settings for homing at a Sculpfun laser, I have a guide here: Limit Switches - Diode Laser Wiki
(not meant to be as spam, I do not earn money with that site 
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